#i1{
    width: 900px;
    height: 40px;
    background: #F9FAFD;
    border: 1px solid #E9E9E9;
    border-radius: 4px;
    margin:10px 0 0 20px;
    padding:5px 10px;
}

#d2{
    width:1280px;
    border:1px black solid;
    height:700px;
}

h3{
    margin:25px 0 0 20px;
}


.a1{
    width:190px;
    height:80px;
    border:2px black solid;
    border-radius:10px;

}



#b1{
    position:relative;
    top:-150px;
    width: 200px;
    height: 40px;
    background: #1992EF;
    border-radius: 4px;
    outline: none;
    margin-top:30px;
    margin-left:30px;
    color:white;
}

.s1{
    display:inline-block
}

d2 #activate{
    border:1px blue solid;
}

d2 #checked{
    border:2px blue solid;
}